If submodules are outdated, it'll panic with the following message
```
Repository is outdated, please run `just submodules` to update it.
```
For us maintainers, we'll need the env `UPDATE_SNAPSHOT` to force an update.
Here implementing the es2015 new target transform, see detail at
https://babel.dev/docs/babel-plugin-transform-template-new-target.
Here has three kinds need to be distinguished.
- `NewTargetKind::Method`, it from `AstKind::ObjectMethod` or
`AstKind::MethodDefinitionKind::Get/Set/Method`. It will be transformed
to `void 0`.
- `NewTargetKind::Constructor`, is from `
AstKind::MethodDefinitionKind::Constructor`. It will be transformed to
`this.constructor`.
- `NewTargetKind::Function`, is from ` AstKind::Function`, here the
function is not the above function. It will be transformed to `this
instanceof _target ? this.constructor : void 0`, here `_target` comes
from the function name or is created by scope uid ident.
